Out of interest I've looked at barrier draws to see if there's any merit in them.

The rules I used are:

1) 12 to 14 starters.
2) No odds-on races.
3) Back the inside barriers. (For example, if 13 runners we back the inside 7)

I checked the past 7 days from Wed 15 July to yesterday, I exclueded Saturday because of the better class of horses. The results are:

Wed 15 Jul
16 wins from 22 races.
Outlay of $144 for a return of $150.

Thurs 16 Jul
6 wins from 12 races.
Outlay of $78 for a retun of $48

Fri 17 Jul
11 wins from 13 races.
Outlay of $85 for a return of $120

Sun 19 Jul
17 winners from 29 selections.
Outlay of $187 for a return of $181

Mon 20 Jul
11 winners from 14 selections.
Outlay of $93 for a return of $138

Tues 21 Jul
5 winners from 9 races
Outlay of $61 for a return of $64

Wed 22 Jul
10 winners from 12 races
Outlay of $75 for a return of $99.

By my calcs there have been 76 winners from 111 races which is a strike rate of 68%. The outlay has been $723 for a return of $800 which is a POT of 10.6% - and these results are based on Unitab divvies.

If only it was this easy!!!